
DENNY BROTHERS & CO„ 



107 LIBERTY STREET, 


SI RANDOLPH STREET, 

CHICAGO. 
































































/ 


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TP 764 
. D41 
Copy 1 


CATALOGUE AND PRICE LIST. 


DENNY BROTHERS k CO., 



N E W Y O R K , 

CHICAGO, 

CINCINNATI. 


THE 


MPERIA 


Li 


IE. 


DESIGNED FOR LIGHTING 

RESIDENCES, FACTORIES, HOTELS, 
COLLEGES, CHURCHES, 

PUBLIC BUILDINGS, R. R. DEPOTS &C. 


Gas Supplies of every Description. 


CORLIES, MACY & CO., STATIONERS k PRINTERS, 
39 Nassau Stbket, New York. 



































IMPERIAL GAS MACHINE 


Vr(HE IMPERIAL GAS MACHINE is an Automatic 
JL Gas-Making Apparatus designed for supplying Resi¬ 
dences, Hotels, Factories, Mills, Churches, Colleges, 
Public Buildings, or groups of buildings, with a safe and 
cheap illuminating Gas. 

The Machine is simple , durable and trustworthy , being 
made entirely of copper, and requiring no more care or 
attention than is necessary in filling, cleaning and trim¬ 
ming one kerosene lamp. 

The Gas is made by impregnating common air with the 
vapor of Gasolene. It is then conducted through iron 
pipes and ornamental fixtures, the same as ordinary street 
gas, and in burning through either the open or Argand 
burners it gives a clear, bright light, fully equal to the 
best coal gas. 

The cost of the Gas varies according to the price of 
Gasolene, from seventy-five cents to one dollar and fifty 
cents per 1,000 cubic feet. 

No artificial heat is used in making the Gas, and build¬ 
ings lighted with it are insured by all the American and 
British Insurance Companies at the same rates as would 
be charged if coal gas were used. 












4 

The material from which the Gas is made is known 
commercially as Gasolene. It is one of the light products 
of petroleum, and can be obtained in large or small quan¬ 
tities from oil refiners or dealers, in all our large cities. 
The price of Gasolene for the past three years has aver¬ 
aged 20 cents per gallon. 

t 

SAFETY. 

The question naturally arises with those who have not 
examined the subject, “ Is there any danger to be appre¬ 
hended from using a Gas Machine ?” Experience has 
clearly demonstrated the fact that a good Gas Machine, 
properly set up, is equally as safe as the use of the ordinary 
Coal Gas in cities , than which there is no safer method of 
illuminating buildings. There can be no question as to 
the safety of using Gas delivered through permanent 
pipes and fixtures. The only 'possible danger is from 
handling the Gasolene ; if this were done in the building 
the escaping vapor might combine with the air and form 
an explosive gas, the same as if a defective meter or gas- 
pipe should leak. Therefore, Gasolene should never be 
handled or stored in the building. 

With the Imperial, the Gasolene is always handled in 
the open air, where any vapor arising harmlessly passes 
off, and it is stored outside of and at any desired distance 
from the building. Nothing enters the building except the 
Gas as manufactured passing through the pipes. 

It will be observed that our Machine is Automatic in its 
operation; there is no Gasometer : no supply is kept on 
hand; the Gas is made just as it is used, whether for one 
burner or for the whole number for which the Machine is 
rated. 

We have been making and placing these Machines for 
more than five years, and never, in a single instance , has an 
accident of any kind occurred through their use. The fact 
that the Insurance Companies allow the use of our Ma- 




chines, without increasing the rates, for buildings in which 
the ordinary street gas has been previously used, may be 
received as conclusive evidence of their absolute safety. 


SIMPLICITY AND RELIABILITY. 

A Gas Machine to be reliable must be simple, especially 
so if it is to be attended to by the gardener, or an or¬ 
dinary laborer, as is so generally the case in lighting 
Country Residences. We call particular attention to this 
feature of the Imperial : it is so simple that the smallest 
possible amount of intelligence is requisite in the person who 
has it in 'charge. After the Machine is placed and con¬ 
nected, ready for operation, no other attention is neces¬ 
sary than to wind up the weight occasionally and fill 
with Gasolene three or four times a year. 

When the purchaser is within reasonable distance, we 
prefer to set the Machine ourselves, sending competent 
mechanics for that purpose and charging actual cost. In 
cases where the distance is too great to send our own em¬ 
ployees, we send printed instructions, by following which 
any competent gas-fitter or machinist can properly set 
the Machine. 

It is a fact of considerable importance that every Ma¬ 
chine we have ever sold is now in operation and giving 
satisfaction. None have ever been discontinued or dis¬ 
placed by any other Machine. 

DURABILITY. 

A good Machine, well made of hard rolled copper, will 
last a lifetime. It will not corrode. There is nothing 
in Gasolene that can injure it. The soldered joints are its 
strongest parts. It will be as perfect in ten years as 
when first placed. Many years’ experience in the business 




6 


has demonstrated the fact that copper is the only metal 
to be depended upon to make a durable Gas Machine ; 
that while Machines can be made of other and cheaper 
metals, it is more economical to use a good material, there¬ 
by saying all expenses for repairs, and have a Machine that 
will not get out of order. 


COST OF THE GAS. 


As has been already stated, the cost of the Gas varies 
according to the price of Gasolene. With any Gasolene 
Machine it requires between 4^ and 5 gallons of Gasolene 
to make light equal to 1,000 cubic feet of 16-candle power 
coal gas. From repeated tests with Gasolene of 86° spe¬ 
cific gravity, at a temperature of 60° Fh., we find that 4^ 
gallons produces 1,000 cubic feet of 16-candle power Gas. 
With Gasolene at 20 cents per gallon (the average price) a 
Gas, equal in illuminating power to good coal gas, will 
cost less than $1.00 per 1,000 feet. 


THE QUALITY OF THE GAS 


made by our Machine is unexceptionable. It lias an illu¬ 
minating power of from 14 to 20 candles; is entirely free 
from sulphur or other impurities; emits no odor while 
burning ; will not smoke when burned through suitable 
burners ; and, with the Argand burner, produces a soft, 
mellow light, similar to that made by the German Stu¬ 
dent Lamp. 








Fig. 1. 





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7 


MANNER OF SETTING MACHINES. 

There lias always been more or less controversy among 
Gas Machine manufacturers as to the best mode of setting 
up the Machines. Some have contended that the best 
plan is to place the Air Pump in the building lighted, and 
the Carbureter or Generator in a vault outside; 

Others, that the Generator should be entirely buried in 
the earth, and the Pump placed in the building ; 

Others, that the Generator should be in a vault, and the 
Pump in a small building directly over the vault; 

Others, that the whole Machine should be placed in a 
vault. Reasonable arguments have been advanced in 
support of each of these plans, and reasonable objections 
have been urged against each. 

The fact is, that the manner of setting the Machine 
should be governed very largely by the nature of the 
work which has to be done. Recognizing this fact, we 
have, for a long time past, followed that plan of placing 
Machines which the circumstances seemed to demand. 
We have never yet failed of complete success. 

It will be seen by reference to our illustrations and de¬ 
scription of Machines, that the Imperial is adapted to all 
of the above-mentioned plans, and that in each case we 
retain the distinguishing features of the Machine. 

The claim has been made by certain parties, that they 
hold a patent and sole right of placing an Air Pump in 
the building, connected with a Carbureter outside. This 
claim has been carried to the highest Court and decision 
rendered against them, notwithstanding which, it is some¬ 
times presented to parties who may be ignorant of the 
facts. We have only to add that we fully guarantee all 
purchasers against any claim whatever of infringement of 
patents, and hold ourselves responsible for any claim for 
damages. 




8 


DESCRIPTION OF MACHINE. 

Fig. “ 1 ” represents the Imperial Machine, as usually 
placed for lighting Residences, Churches, Railroad De¬ 
pots, Factories, Hotels, or any building or group of build¬ 
ings where less than five hundred burners are to be lighted. 

It consists of two parts—the Air Pump, which may be 
placed anywhere inside the building lighted; and the 
Carbureter, which is entirely buried in the earth, at any 
desired distance. Gasolene is supplied from the surface 
of ground through tilling tube, “ N,” the vent being the 
larger tube, “ O.” The wire, “ T,” attached to float, “ S,” 
indicates the quantity of Gasolene in the Carbureter. The 
wicking, arranged in vertical columns, draws up the Gaso¬ 
lene, and holds it suspended, ready for the action of air 
from Air Pump. Air is drawn by the pump, from outside 
the building, through induction pipe, “ I,” and forced 
through air pipe, “L,” to the Carbureter, where, in its 
course through the passages, “ J, J, J, J,” it becomes 
charged with vapor, and then passes through gas pipe, 
“ G,” to the burners. 

For extreme simplicity and thorough reliability this 
form of the Imperial Gas Machine cannot be excelled. 

Pig. “ 2 ” represents the Imperial Machine as con¬ 
structed and placed for lighting Hotels, Factories, Col¬ 
leges, or other large buildings, where five hundred or 
more burners are to be used. 

It is usually placed in a substantial building with 
ground floor and cellar, as shown in the cut, and at a suit¬ 
able distance from the main building. 

The Pump, “ A,” being operated by means of weight, 
“ W,” inducts common air at inlet, “ E,” and delivers the 
same through air pipe, “ M,” to the Carbureter. 

The Carbureter is placed in lower part of building on 





































































































































































































































































































































































































































* 





9 

substantial brick piers. It is horizontally divided near 
the centre, the lower part forming the Gasolene reservoir, 
“C,” and the upper part the Carbureter proper, “B.” 
The Carbureter is divided into five or more pans, which, 
in turn, are divided into narrow passages, and so arranged 
as that the air must necessarily pass through the whole 
series before entering the gas pipe, “ R.” The Carbureter 
proper is in no sense a reservoirfor the Gasolene , but is con¬ 
stantly supplied from the reservoir in exact 'proportion to 
the quantity of gas delivered. This is done by means of an 
elevating feed wheel, driven by feed belt, “ Q,” and cone 
pulleys, “ O ” and “P,” the power being derived from 
main shaft of Air Pump. 

The Air Pump delivering to the Carbureter a definite 
quantity of air at each revolution, and the feed wheel sup¬ 
plying a definite quantity of Gasolene , it follows that the gas 
will alivays he the same in quality and illuminating poiver; 
and the Feed Pulleys being graduated, , it will be seen that 
the relative proportions of air and Gasolene may be regulated , 
and thus any desired quality of gas secured and maintained. 
The Carbureter passages in this form of machine are sup¬ 
plied with vertical columns of wicking (the same as in 
Fig. “ 1 ”), which take up the Gasolene fed to them, and 
hold it suspended in minute particles, until evaporated 
by the current of air, which, in its passage through the 
Carbureter, becomes charged with the vapor and con¬ 
verted into illuminating gas before entering the gas 
pipe, “R.” 

Fig. “ 3 ” represents the Imperial Machine with the Air 
Pump and Carbureter combined, the complete Machine 
being placed in an underground vault, at any desired dis¬ 
tance from the building lighted. Gasolene is supplied 
two or three times a year through pipe “D,” which ex¬ 
tends to surface of ground. The weight may be wound 
up by crank “K,” without entering the vault. 

The Machine is divided into three separate compart¬ 
ments, one of which contains the Air Pump, one the Gaso¬ 
lene, and the other a series of passages, with fibrous ma- 




10 


terial so arranged as to hold the Gasolene suspended in 
minute particles, so that it may be readily vaporized. It 
is in the latter compartment (denominated the Carbureter) 
that the gas is made. The weight, “W,” operates by 
means of the cable, “ V,” upon the shaft, “A,” to which is 
attached the air wheel, and a wheel for supplying or feed¬ 
ing Gasolene to the Carbureter. The Air Wheel inducts 
common air, and forces it through the Carbureter and gas 
pipes to the burners. In its course through the passages 
of the Carbureter, the air becomes charged with the 
vapor, and is converted into an illuminating gas before 
entering the pipes. By the peculiar construction of the 
air wheel an unvariable pressure is maintained in all the 
pipes connected with the Carbureter. When one or more 
burners are opened, the wheel revolves just fast enough 
to supply the outlet. When all the burners are closed 
the wheel is stationary. 

This style of Machine is peculiarly adapted for manu¬ 
facturing purposes. By means of the feed device an in¬ 
tense heat may be obtained at very slight cost. 


RECAPITULATION. 

1st. The Imperial is absolutely safe, the Gasolene being 
always handled in the open air, at any desired distance 
from the building lighted. 

2d. The simplicity of its construction secures its abso¬ 
lute reliability. 

3d. It requires a minimum amount of attention. 

4th. The Machine is automatic in its operation, and can¬ 
not run otherwise than right. 

5th. The lights are always clear and steady, with either 
the Argand or open burners. 

6th. Our Machines being made entirely of copper, and 
there being scarcely a perceptible motion, they are not 
liable to derangement, and will last a life-time. 













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7th. They operate equally as well in ivinter as in sum¬ 
mer. 

8th. The open burner can he used with satisfaction as 
well as the Argand. 

9th. We never require alterations in the piping where 
coal gas has been satisfactorily used. 

10th. The weight can be wound up while the Machine 
is in operation. 

11th. The lights are always uniform. 

12th. Our Air Pump is stronger , and is capable of giving 
double the pressure of any other Air Pump. 

13tli. We use up every drop of the gasolene. No re¬ 
siduum. 

14th. The evaporating surface is greater than in any 
other Machine. 

15th. The capacity of the Imperial, as rated, is equal, 
in every respect, to any Machine made. 

16th. The Imperial has no glass gauges, no combina¬ 
tion of stop-cocks, no automatic valves, and no springs— 
all of which are liable to derangement. 


THE RATING OF MACHINES. 

There is no invariable rule by which to determine the 
number of burners that a Machine will supply. The 
rating is entirely arbitrary with each manufacturer. One 
may rate a Machine with a Pump and Carbureter of a given 
size as a 100-light Machine, while another, may rate the 
same size Machine as a 50-light. This fact accounts, to a 
great extent, for the comparatively cheap prices at which 
some Machines are offered. 

The Imperial is rated low enough to insure every Ma¬ 
chine supplying, tender all circumstances , the full number of 
burners stated. Our Carbureters have a Gasolene capacity 
as great and a carbureting surface at least one-third 
greater than any other Machine made. 








12 


PRICE LIST 


For Copper Machines, warranted to supply the full number of 
Burners, as rated. 


Size. 

Xo. of Burners. 

Gasolene Capacity. 

Price. 

No. 1 

20 

70 gallons. 

$260 

2 

30 

100 “ 

375 

3 

50 

160 “ 

500 

4 

75 

200 “ 

650 

5 

100 

250 “ 

800 

6 

150 

300 “ 

1,000 

7 

200 

350 “ 

1,150 

8 

300 

500 “ 

1,500 

9 

400 

625 “ 

1,750 

10 

500 

750 “ 

1,950 

11 

800 

1,600 “ 

3,200 

12 

1,000 

1,900 “ 

4.000 


Prices for larger Machines subject to special contract. 

PIPING AND FIXTURES. 

We solicit from parties who are building, an opportu¬ 
nity to estimate for the entire work of Piping, Fixtures 
and Gas Machine. We employ a large force of skilled 
mechanics, and can guarantee as to Piping, good ivork and 
low prices. We are constantly filling large orders for Gas 
Fixtures, and can give to our patrons the benefit of low- 




















13 

est trade discounts. Where we do the whole work, we 
thereby make ourselves responsible for the success of 
everything connected with the lighting of your building. 

If you are building without intending to at once intro¬ 
duce Gas, we suggest that you at least have your building 
piped, as the cost of piping is merely nominal when done 
at the proper stage of erection. 

All large Coal Gas Companies usually prescribe a scale 
of piping which they require to be conformed to, the fol¬ 
lowing being that usually adopted and which we recom¬ 
mend. 


Size of Pipe. 

Greatest Length 
Allowed. 

Greatest Number of 
Burners Allowed. 

§ inch. 

20 feet. 

3 

* “ 

o 

CO 

6 

3 (( 

5 

50 “ 

20 

1 “ 

70 “ 

35 

n “ 

100 “ 

60 

H “ 

150 “ 

100 

2 « 

200 “ 

200 

2i “ 

300 “ 

300 

3 “ 

450 “ 

450 


GASOLENE. 

The large number of Gas Machines now in use has cre¬ 
ated a corresponding demand for Gasolene, and, as is usual 
in such cases, the desire of the dealers to undersell each 
other has led to the supplying, in many instances, of an 
inferior article. For this reason, and to accommodate 
those using the Imperial Machine, we have arranged to 
keep constantly on hand a stock distilled especially for 













14 


us, and which is known as “ Imperial Gasolene.” We will 
fill all orders for Gasolene promptly, and warrant it in 
every instance. 

When ordering Gasolene state what Machine you are i 
using, as some Machines require a lighter gravity than 
others. 


FOR MECHANICAL PURPOSES. 

This Gas may be used equally as well as coal gas for 
all purposes wherein the latter has superseded the use of 
charcoal—as in heating soldering irons, brazing metals, 
etc. ; an exceedingly hot blast being obtained at small 
cost. It is also used for heating purposes in restaurants. 


TO LARGE GAS CONSUMERS. 

Many people have the idea that these Machines are de¬ 
signed for lighting only those buildings that have no 
means of obtaining the ordinary coal gas from city gas 
companies, while the fact is that we are placing as many 
Machines for buildings within the limits of street gas as we 
are for those that are outside such limits. 

We call your especial attention to the following facts 
which have brought about this result : 

1st. The Gas made by the Imperial Machine is as good in 
every respect as coal gas, and cannot possibly cost more than 
one dollar and thirty cents per thousand cubic feet, as compared 
with sixteen-candle power coal gas, while the average 
price of the latter is about three dollars and fifty cents 
per thousand, and it is seldom to be found of an illumin¬ 
ating power of more than fourteen candles. 

2d. The Imperial is so constructed, and our method of 
placing Machines is such, that no difficulty is met with in 
the matter of insurance. The rates will be no greater with our 
Machine than with coal gas. 











15 

Sd. Tlie Imperial is the only Gas Machine on the market 
that will give equal satisfaction with either the open or the 
Argand burner. 

It is on the score of'economy that we are succeeding, in so 
many instances, in causing the use of street gas to be dis¬ 
continued, and our Machine adopted in its place. It is, 
therefore, simply a matter of figures. If you will take 
your gas bills for a year back, you can readily find out 
how much gas you have paid for. Then find the amount 
you would save annually if the price were reduced to $1.00 
per thousand. In addition to the first cost of Machine, 
(see our Price List) add from $30.00 to $100.00 (according 
to size) for placing and connecting it, and you may see at 
a glance about how long it would take for the savings to 
repay the original outlay. Where this would result in from 
one to three years , it is undoubtedly a real economy to put in 
an Imperial Machine . 

















% 

















V 































18 


EACH. 

$ 1.00 


ARG-AND BURNER, 

With Open Spring Holder. 

MADE ESPECIALLY FOR GASOLENE GAS. 



Fig. 5. 


PRICE. 


PER DQZ. PER GROSS. 

$10.00 $98.00 








































NOISELESS ARGAND BURNER, 

With Open Spring Holder. 



A new and improved Argand Burner, constructed on 
scientific principles, and especially adapted for Gaso¬ 
lene Gas. It is entirely noiseless under all pressures. 

PRICE. 

EACH. PER DOZ. PER GROSS. 

$1.25 $±2.50 $125.00 





























































20 

Chimneys for Argand Burners. 



PRICE. 

EACH. PER DOZ. 

6 and 7 inch, French Flint, 10 cts. $1.00 

6 inch, half ground, - - - - 20 cts. 2.00 

7 “ “ - - 25 cts. 2.50 

8 “ “ .... 30 cts. 3.00 

6 “ Opal,.20 cts. 2.00 







































21 


PATENT 

AUTOMATIC LEVER BURNER. 



Fig. 8. 


An “ adjustable ” open Burner, especially designed for 
Gasolene Gas. The latest improvement. All Brass, and 
used with any size of Lava Tip. 


EA.CH. 

50 cts. 


PRICE. 

PER DOZ. 

$5.00. 


PER GROSS. 

$55.00. 














22 


CLOUGH’S PATENT BURNER, 

For Gasolene Gas. 


Fig. 9. 

PR ICE. 

EACH. PER DOZ. PER GROSS. 

35 cts. $3.60. $43.20. 



BRASS LAVA TIP BURNER, 

For Gasolene Gas. 



EACH. 

10 cts. 


Fig. 10. 

PRICE. 

PER DOZ. PER GROSS. 

$1.00. $8.60'. 























23 


TAPER SLIDE AND KEY. 

...■.■--■■■-. -. 

Fig. 11. 

V 

Each, - 

$2.00. 

WAX TAPERS. 


■ 

Fig. 12. 

5|jj|jij| 

Put up 30 in a Box (£ pound.) 


Per Box, ----- 

Per Lb., ------ 

30c. 

$1.00. 















24 


OPAL GLOBES. 



Fig. 13. 


Designed Expressly 

for Gasolene Gas. 


EACH. 

PER DOZ. 

5 x7J inches, 

.60 

$ 5.50 

5x9~ “ 

$1.50 

14.25 

6 x12 “ 

5.00 

46 00 

7 J inches, “ especially for 



Argand Burners,” 

.75 

7.00 


TRIPOD GLOBE HOLDER, 


For 4 and 5 Inch Globes. 



Fig. 14. 


EACH. PER DOZ. PER GROSS. 

20c. $1.60. $16.00. 












25 


TRIPOD GLOBE HOLDER, 


For 4 and 5 Inch Globes. 



Fig. 15. 


EACH. 

15c. 


PER DOZ. PER GROSS. 

$ 1.20 $ 12 . 00 . 


BURNER CLEANER. 



Fig. 16. 


EACH. 

10c. 


PER DOZ. 

75c. 
































26 

FAUCET AND HOSE, 

For Transferring Gasolene from Barrel to Under¬ 
ground Tank. 



Fig. 17. 


EACH. PER I>OZ. 

$1.50. $13.50. 


WIRE CORD. 

For Gas Machine Weights. 


(Roebling’s.) 


Trade No. 

! 

Diameter. 

NET PRICE, PER 

FOOT. 

Iron. 

Copper. 

Tinned. 

. . 26. . . . 


... n ... 

.. . 16. .. 

. . . 9 . . . 

. . 27- 


• • • 61. • . 

. . . 13. . . 

71 

.. 27^. . . 


. . . 5 . . . 

. . . 10. . . 


. . 28. . . . 


. . . 3 . . . 

G 

. . . 4. . . 

. . 29. . . . 

r. 

1 

. . . 2 . . . 

. . .4.. . 







































27 


STEEL GAS PLYERS (Polished.) 



Fig. 18. 


6 INCH. 

7 INCH. 

8 INCH. 

10 INCH 

12 INCH 

$1.25. 

$1.55. 

$1.80. 

$2.50. , $3.00. 

1 


HYDROMETERS, 


For Testing the Quality of Gasolene. 


EACH. 


PER DOZ. 


$1.50 


$15.00 


























































































« 











f 


Gas Engineers and Contractors, 

107 LIBERTY STREET, 

Chicago Office : 

81 RANDOLPH STREET. SfEW 'STORK, 

Allow us to call your attention to our facilities for furnishing Gas Apparatus 
for all classes of work and for every variety of buildings, from a small dwelling-house 
to a large city. 

We have been for many years engaged in the business of manufacturing and 
placing Gas Apparatus and can refer you to hundreds of parties in all parts of the 
United States, Canada,, South America, Cuba, the Australian Colonies and other 
countries, with whom we have had contracts, 

We keep constantly employed a large force of skilled workmen in both our 
Machinery and Gas Fitting departments, and are prepared to execute all orders with 

promptness and efficiency. Our 

“IMPERIAL GAS MACHINE” 

has been before the public for nearly ten years and has a wide-spread reputation for 
its great simplicity and perfect reliability. It is highly recommended by our leading 
Architects and Engineers. 

If you contemplate putting in a Gas Apparatus, we request the privilege of 

* > • 

furnishing you with our estimate for the work and would be pleased to correspond 
with you on the subject. 

Respectfully, 


DENNY BROTHERS & CO. 


LIBRARY OF CONGRESS 









































library OF CONGRESS 


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